Limitations
There were several limitations to this study. Firstly, because all the death occurred in associated complex anomalies, and the short-term and long-term results of the surviving patients were good, no statistical correlation study was conducted in this study. Secondly, all follow-up medical examinations were mainly echocardiography. We did not carry out CT or MRI examination for patients with intracardiac tunnel or extracardiac method, which can show the operation effects more clearly.